Chin. Phys. Lett.  2005, Vol. 22 Issue (7): 1611-1613    DOI:
Original Articles |
Hawking Radiation from the Horowitz--Strominger Black Hole
FANG Heng-Zhong1,2;HU Ya-Peng2;ZHAO Zheng2
1Department of Physics, Chinese Ocean University, Qingdao 266071 2Department of Physics, Beijing Normal University, Beijing 100875
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FANG Heng-Zhong, HU Ya-Peng, ZHAO Zheng 2005 Chin. Phys. Lett. 22 1611-1613
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Abstract When a black hole radiates particles, it losses energy and shrinks, the horizon contracts from its original radius to a new smaller radius. This leads to the separation between the initial and final radii, which sets the barrier for the particles to tunnel. We develop the work of Parikh [Phys. Rev. Lett. 85(2000)5042; Gen. Rel. Grav. 36,(2004)2419] to a Horowitz--Strominger black hole, i.e. applying the Wentzel--Kramers--Brillouin approximation and semi-classical method to calculate the rate of the Hawking radiation. The result agrees with Γ ~ e-2ImI=eΔSBH. It is also proven that the energy spectrum deviates from exact thermality.


Keywords: 04.70.Dy      04.70.Bw     
Published: 01 July 2005
PACS:  04.70.Dy (Quantum aspects of black holes, evaporation, thermodynamics)  
  04.70.Bw (Classical black holes)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I7/01611
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